When higher frequency resolution
than 1/3 octaves is needed, FFT Frequency Analysis Model 831C-FFT is the ideal solution. The narrow-band filtering provided by Fast Fourier Transform (FFT) Analysis of single-channel acoustic or vibration sources is useful for machinery analysis,
product development, tone detection, fault analysis, and vibration troubleshooting. Offering precision spectral analysis of signals, FTT acquisition settings can be adjusted to visualize specific acoustic and vibration phenomena. Using FFT on the
handheld SoundAdvisor™ Sound Level Meter is a convenient way to achieve an objective measurement of tones or vibration phenomena in the field.
Already own a SoundAdvisor Meter or System? Turn your Sound Level Meter into an FFT analyzer without returning it to the factory by adding Model 831C-FFT Firmware using G4 LD Utility Software.
| FFT Analysis (with option 831C-FFT) Technical Specifications | ||||
|---|---|---|---|---|
FFT Lines | 400, 800, 1600, 3200, & 6400 | |||
Bandwidth (Hz) | 100, 200, 500, 1k, 2k, 5k, 10k, & 20k | |||
Window | Hanning, Flat-top, and Rectangular | |||
Overlap | Fixed 33% | |||
Units | dB re 20 uPa, m/s2, cm/s2, mm/s2, g, ft/s2, in/s2, custom | |||
Y-axis | Linear or log | |||
Cursor | Max tracking with harmonic cursors | |||
Supported Sensors | Microphone or ICPr accelerometer (with ADP074) | |||
Integration | Frequency domain to velocity and displacement | |||
Acoustic weighting | A, C, or Z (none) | |||
* ISO/PAS 20065:2016 Acoustics - Objective method for assessing the audibility of tones in noise - Engineering method